Reuse the installDependencies from flocker_bb.builders.flocker in flocker_vagrant.
Run acceptance tests.
Merge forward.
Allows specfying acceptance testing nodes.
Switch acceptance tests to use :.
Merge pull request #38 from ClusterHQ/acceptance-tests

[FLOC-1050] Run acceptance tests on buildbot.
Merge pull request #39 from ClusterHQ/ubuntu-builder

[FLOC-1047] Add a Ubuntu builder.
Update config.yml.sample with ubuntu builder.
Update lastpass instructions in config.yml.sample.
Vagrant builder setup.
Allow multiple dedicated slaves.
Use admin/run-acceptance-tests to run acceptance tests.
flake8
Merge branch 'vagrant-test', remote-tracking branches 'origin/vagrant-setup' and 'origin/ubuntu-omnibus' into staging